Malicious PDF — malware analysis report

Static analysis result for SHA-256 980cc20f5e502af9…

MALICIOUS

PDF

77.9 KB Created: 2021-03-17 16:55:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 006b23a98b0e5a245a23f4110e0bfb9e SHA-1: 5ce7134a00d9a01e181ebfffd46a92d680f70cdd SHA-256: 980cc20f5e502af9e3b3e73039bcba9d3136f930017a38c042ee10fdd723f5a5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://xajibur.ru/strik?utm_term=dell+xps+8500+core+i7 PDF link annotation
    • http://smotrikino.fun/xizunozi3pp0i.pdfIn PDF document text
    • https://cdn.sqhk.co/nalujujoso/LigXhc3/61524227997.pdfIn PDF document text
    • http://bitalotava.scienceontheweb.net/nulozoz.pdfIn PDF document text
    • http://pupezawat.scienceontheweb.net/can_you_use_ps4_gold_wireless_headset_on_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/sebutarukaw/jlTiijM/here_you_go_meaning_in_nepali.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/iFqgdha/naluzafovoligi.pdfIn PDF document text
    • http://idealica-tufficiale.website/island_of_doctor_moreau_documentary_netflixc8zi2.pdfIn PDF document text
    • https://cdn.sqhk.co/totimujid/gfGSDid/wepikibejifux.pdfIn PDF document text
    • https://cdn.sqhk.co/pidefatop/jaYC1if/gasulekof.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/jiicif8/24805086580.pdfIn PDF document text
    • http://mishgen.com/18958788954z9fke.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9434ab90-eb3a-49b4-8f69-003684c1d928/nisesaverejigukobig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60e7869b-a335-4752-872a-15e8e3eb48b7/graco_duoglider_double_stroller_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/waganijixawevarujuk.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/zejuta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e4f285b-414c-40c3-896c-a5506c501333/noxogizibumutuwadapuvez.pdfIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/auntie_mame_script.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/is_supply_chain_a_good_career_in_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc3b37f2-b06a-45cb-9653-c3bef5e171ba/is_the_bulletproof_diet_keto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46aff709-a89a-433d-b7ca-7a52aa3f8659/10354241160.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A2 5324 bytes
SHA-256: 6c189fe444098e1ce08706c25b4f310e5df40ccffc2592406351ad634ed567bc
font_01_sfnt_off000104eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104EB 10912 bytes
SHA-256: 6c9334d6572104845231c8bf592a8e7c18ba1916b67c7d21c2f3e9d4adabff06

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